The Mountain Bike (MTB) Trail is a great mountain bike specific loop offering nearly 10 miles of excellent riding. The trail has features suitable to those with advanced skills, but multiple bail-out points make this a good place for intermediate riders to challenge their skills.
The main park entrance is on Grovenburg Road, and full facilities are available at that entrance. This trail is a bit harder to find from there. Riverbend Natural Area (trailhead) entrance is off Nichols Road and there is a kiosk and clear trail markings at this entrance. There is also an outhouse there, but not potable water. The McNamara entrance off of Columbia Road features the same primitive amenities.
The MTB Trail is a series of named segments linked together, and trail maps are located at each of the three lots. Follow the orange sign posts with bike icon and directional arrows. All turns are marked with the orange signposts. mmmba.org/trails/
has links to pdfs and GPS versions of the trail.
In general, this is a nice fun trail system aimed at making use out of limited terrain within the overall area. A few optional elevated stunts will be found within the loop, with the majority of them not too far from the Riverbend parking lot. There are bypass options for all of these.
During summer months the MMMBA chapter hosts weekly group rides. The ones at Burchfield can be a great way to learn the trail plus meet other riders.
Two other trails are nearby, Bennett Park in Charlotte and Anderson Park on Old Lansing Road (currently named Blue Loop Green Loop
and Red Loop
and can be located that way here on MTB Project).